1, onions and tomatoes were cut into small pieces, onions just a little bit enough, not used up onions can be done next pizza.

2, pour a little oil in the pot, preferably olive oil, you can also use corn oil or sunflower oil, do not use sesame oil, canola oil or peanut oil, their flavor is too fragrant.

3, the oil is hot under the chopped onion stir fry, sautéed flavor, under the crushed tomatoes.

4, continue to stir fry for about 2 minutes, pour in the tomato salsa.

5, stir fry evenly, cook for a short while, pour in water, salt, herbs.

6, open the pot and simmer on low heat, to guard the side and slowly stir to prevent sticking. Simmer the sauce to cool it can be served.